diff --git a/android/app/src/main/kotlin/io/openim/flutter/openim/MainActivity.kt b/android/app/src/main/kotlin/io/openim/flutter/openim/MainActivity.kt
index 7fc98c2..7ad389c 100644
--- a/android/app/src/main/kotlin/io/openim/flutter/openim/MainActivity.kt
+++ b/android/app/src/main/kotlin/io/openim/flutter/openim/MainActivity.kt
@@ -13,6 +13,7 @@ import android.util.Base64
 import android.util.Log
 import android.webkit.ServiceWorkerController
 import android.webkit.WebSettings
+import android.webkit.WebStorage
 import android.webkit.WebView
 import androidx.core.content.FileProvider
 import io.flutter.embedding.android.FlutterActivity
@@ -30,10 +31,14 @@ class MainActivity : FlutterActivity() {
     private val WEBVIEW_CACHE_CHANNEL = "io.openim.flutter.im_webview_app/webview_cache"
     private val TAG = "MainActivity"
     private val MAX_BRANDING_ICON_SIZE = 192
-    private val WEBVIEW_DATA_DIRECTORY_SUFFIX = "h5_shell_fresh_profile_v2"
+    private val WEBVIEW_DATA_DIRECTORY_SUFFIX = "h5_shell_fresh_profile_v3"
+    private val WEBVIEW_STORAGE_RESET_PREFS = "h5_shell_webview_storage"
+    private val WEBVIEW_STORAGE_RESET_KEY = "reset_version"
+    private val WEBVIEW_STORAGE_RESET_VERSION = 3
 
     override fun onCreate(savedInstanceState: android.os.Bundle?) {
         configureWebViewDataDirectory()
+        clearWebViewPersistentStorageOnce()
         // 华为/荣耀/OPPO 等国产设备：在任意网络请求之前同步安装 Conscrypt，修复 SSL 握手失败（无 GMS 时系统 SSL 实现不完整）
         try {
             Security.insertProviderAt(Conscrypt.newProvider(), 1)
@@ -150,6 +155,46 @@ class MainActivity : FlutterActivity() {
         }
     }
 
+    private fun clearWebViewPersistentStorageOnce() {
+        val prefs = getSharedPreferences(WEBVIEW_STORAGE_RESET_PREFS, MODE_PRIVATE)
+        if (prefs.getInt(WEBVIEW_STORAGE_RESET_KEY, 0) >= WEBVIEW_STORAGE_RESET_VERSION) {
+            return
+        }
+
+        try {
+            WebStorage.getInstance().deleteAllData()
+            Log.d(TAG, "WebView persistent storage cleared")
+        } catch (e: Exception) {
+            Log.w(TAG, "WebView persistent storage clear failed: ${e.message}")
+        }
+
+        clearKnownWebViewCacheDirectories()
+        prefs.edit().putInt(WEBVIEW_STORAGE_RESET_KEY, WEBVIEW_STORAGE_RESET_VERSION).apply()
+    }
+
+    private fun clearKnownWebViewCacheDirectories() {
+        val cacheDirectoryNames = listOf(
+            "WebView",
+            "webview",
+            "org.chromium.android_webview",
+            "com.android.webview"
+        )
+
+        for (name in cacheDirectoryNames) {
+            val directory = File(cacheDir, name)
+            if (!directory.exists()) {
+                continue
+            }
+            try {
+                if (!directory.deleteRecursively()) {
+                    Log.w(TAG, "WebView cache directory delete returned false: ${directory.absolutePath}")
+                }
+            } catch (e: Exception) {
+                Log.w(TAG, "WebView cache directory delete failed: ${directory.absolutePath}, ${e.message}")
+            }
+        }
+    }
+
     private fun readLongArgument(value: Any?): Long? {
         return when (value) {
             is Int -> value.toLong()
diff --git a/lib/config/app_config.dart b/lib/config/app_config.dart
index 4de5d4d..f9c9c1b 100644
--- a/lib/config/app_config.dart
+++ b/lib/config/app_config.dart
@@ -21,33 +21,14 @@ class AppConfig {
     final host = environmentHosts.isNotEmpty
         ? environmentHosts.first
         : 'h5-im.imharry.work';
-    return _withShellBranding(
+    return withFreshShellParams(
       _normalizeHomeUrl(host),
       appName: appName,
       appLogo: appLogo,
     );
   }
 
-  static String withFreshShellCacheBust(String url) {
-    final uri = Uri.parse(url);
-    final queryParameters = Map<String, String>.from(uri.queryParameters)
-      ..['shell_cache_bust'] = DateTime.now().millisecondsSinceEpoch.toString();
-
-    return uri.replace(queryParameters: queryParameters).toString();
-  }
-
-  static String _normalizeHomeUrl(String host) {
-    final value = host.trim();
-    final normalized =
-        value.startsWith('http://') || value.startsWith('https://')
-            ? value
-            : 'https://$value';
-    final uri = Uri.parse(normalized);
-    final path = uri.path.isEmpty ? '/' : uri.path;
-    return uri.replace(path: path).toString();
-  }
-
-  static String _withShellBranding(
+  static String withFreshShellParams(
     String url, {
     String? appName,
     String? appLogo,
@@ -77,4 +58,23 @@ class AppConfig {
         )
         .toString();
   }
+
+  static String withFreshShellCacheBust(String url) {
+    final uri = Uri.parse(url);
+    final queryParameters = Map<String, String>.from(uri.queryParameters)
+      ..['shell_cache_bust'] = DateTime.now().millisecondsSinceEpoch.toString();
+
+    return uri.replace(queryParameters: queryParameters).toString();
+  }
+
+  static String _normalizeHomeUrl(String host) {
+    final value = host.trim();
+    final normalized =
+        value.startsWith('http://') || value.startsWith('https://')
+            ? value
+            : 'https://$value';
+    final uri = Uri.parse(normalized);
+    final path = uri.path.isEmpty ? '/' : uri.path;
+    return uri.replace(path: path).toString();
+  }
 }
diff --git a/lib/main.dart b/lib/main.dart
index 04597eb..8176390 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -105,6 +105,45 @@ const _purgeWebRuntimeCacheScript = r'''
     });
 })();
 ''';
+const _inspectH5SnapshotScript = r'''
+(() => {
+  const toAbsoluteUrl = (value) => {
+    try {
+      return new URL(value, window.location.href).href;
+    } catch (_) {
+      return value || '';
+    }
+  };
+
+  const shrinkAssetUrl = (value) => {
+    const absolute = toAbsoluteUrl(value);
+    const match = absolute.match(/\/assets\/[^?#]+/);
+    return match ? match[0] : absolute;
+  };
+
+  const scripts = Array.from(document.scripts)
+    .map((script) => script.src)
+    .filter(Boolean)
+    .map(shrinkAssetUrl);
+  const links = Array.from(document.querySelectorAll('link[href]'))
+    .map((link) => link.href)
+    .filter(Boolean)
+    .map(shrinkAssetUrl);
+  const bodyText = (document.body?.innerText || '')
+    .replace(/\s+/g, ' ')
+    .slice(0, 300);
+
+  return JSON.stringify({
+    type: 'h5Snapshot',
+    href: window.location.href,
+    title: document.title,
+    scripts,
+    links,
+    bodyText,
+    userAgent: navigator.userAgent,
+  });
+})();
+''';
 const _shellMediaPermissionBridgeScript = r'''
 (() => {
   if (window.__openimShellMediaBridgeInstalled) {
@@ -395,7 +434,10 @@ class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
 
     final platformController = controller.platform;
     if (platformController is AndroidWebViewController) {
-      AndroidWebViewController.enableDebugging(false);
+      assert(() {
+        AndroidWebViewController.enableDebugging(true);
+        return true;
+      }());
       unawaited(platformController.setMediaPlaybackRequiresUserGesture(false));
       unawaited(platformController.setGeolocationEnabled(true));
       unawaited(
@@ -432,6 +474,7 @@ class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
       unawaited(openAppSettings());
     }
     if (type == 'runtimeCachePurged' && payload != null) {
+      debugPrint('[H5Shell] runtime cache purged: ${jsonEncode(payload)}');
       unawaited(_reloadAfterRuntimeCachePurge(payload['url'] as String?));
     }
     if (type == 'requestMediaPermissions' && payload != null) {
@@ -512,7 +555,11 @@ class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
     }
 
     try {
-      return AppConfig.withFreshShellCacheBust(value);
+      return AppConfig.withFreshShellParams(
+        value,
+        appName: widget.shellBranding.appName,
+        appLogo: widget.shellBranding.appLogo,
+      );
     } catch (_) {
       return _freshHomeUrl();
     }
@@ -527,6 +574,7 @@ class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
 
     unawaited(_syncShellBranding());
     unawaited(_injectShellMediaPermissionBridge());
+    unawaited(_logLoadedH5Snapshot());
     if (mounted) {
       setState(() {
         _progress = 100;
@@ -635,6 +683,35 @@ class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
     return _runJavaScriptSafely(_stopWebMediaScript);
   }
 
+  Future<void> _logLoadedH5Snapshot() async {
+    try {
+      final result = await _controller.runJavaScriptReturningResult(
+        _inspectH5SnapshotScript,
+      );
+      debugPrint(
+        '[H5Shell] loaded H5 snapshot: ${_decodeJavaScriptStringResult(result)}',
+      );
+    } catch (error) {
+      debugPrint('[H5Shell] loaded H5 snapshot failed: $error');
+    }
+  }
+
+  String _decodeJavaScriptStringResult(Object? result) {
+    if (result == null) {
+      return '';
+    }
+    if (result is String) {
+      try {
+        final decoded = jsonDecode(result);
+        if (decoded is String) {
+          return decoded;
+        }
+      } catch (_) {}
+      return result;
+    }
+    return result.toString();
+  }
+
   Future<void> _loadHome() async {
     await _loadUrl(_freshHomeUrl());
   }
diff --git a/test/widget_test.dart b/test/widget_test.dart
index f500283..de0dab6 100644
--- a/test/widget_test.dart
+++ b/test/widget_test.dart
@@ -28,4 +28,23 @@ void main() {
     expect(uri.toString(), isNot(contains('%25')));
     expect(Uri.splitQueryString(uri.fragment)['shell_app_logo'], logo);
   });
+
+  test('keeps shell branding when refreshing an H5 route URL', () {
+    const logo = 'data:image/png;base64,routeLogo+/=';
+
+    final uri = Uri.parse(
+      AppConfig.withFreshShellParams(
+        'https://h5-im.imharry.work/login?from=runtime',
+        appName: 'Shell Route',
+        appLogo: logo,
+      ),
+    );
+
+    expect(uri.path, '/login');
+    expect(uri.queryParameters['from'], 'runtime');
+    expect(uri.queryParameters['flutter_shell'], '1');
+    expect(uri.queryParameters['shell_app_name'], 'Shell Route');
+    expect(uri.queryParameters['shell_cache_bust'], isNotEmpty);
+    expect(Uri.splitQueryString(uri.fragment)['shell_app_logo'], logo);
+  });
 }